forked from GNUsocial/gnu-social
46 lines
1.5 KiB
JavaScript
46 lines
1.5 KiB
JavaScript
function getRoundedCanvas(sourceCanvas) {
|
|
var canvas = document.createElement('canvas');
|
|
var context = canvas.getContext('2d');
|
|
var width = sourceCanvas.width;
|
|
var height = sourceCanvas.height;
|
|
|
|
canvas.width = width;
|
|
canvas.height = height;
|
|
context.imageSmoothingEnabled = true;
|
|
context.drawImage(sourceCanvas, 0, 0, width, height);
|
|
context.globalCompositeOperation = 'destination-in';
|
|
context.beginPath();
|
|
context.arc(width / 2, height / 2, Math.min(width, height) / 2, 0, 2 * Math.PI, true);
|
|
context.fill();
|
|
return canvas;
|
|
}
|
|
|
|
var input = document.getElementById('form_avatar')
|
|
var container = document.getElementById('img-container')
|
|
var cropImage = document.getElementById('img-cropped')
|
|
var cropped = document.getElementById('form_hidden')
|
|
|
|
input.addEventListener('change', function (e) {
|
|
if (!input.files || !input.files[0]) return;
|
|
var reader = new FileReader()
|
|
reader.onload = function (e) {
|
|
container.style = 'display: block'
|
|
cropImage.setAttribute('src', e.target.result)
|
|
|
|
function update() {
|
|
var croppedCanvas = cropper.getCroppedCanvas()
|
|
var roundedCanvas = getRoundedCanvas(croppedCanvas)
|
|
cropped.value = roundedCanvas.toDataURL()
|
|
input.files = undefined
|
|
}
|
|
var cropper = new Cropper(cropImage, {
|
|
aspectRatio: 1,
|
|
viewMode: 1,
|
|
cropend: update,
|
|
ready: update,
|
|
})
|
|
}
|
|
reader.readAsDataURL(input.files[0])
|
|
})
|
|
|